Impact profenophos (pesticide) on infectivity of <i>Biomphalaria alexandrina</i> snails with <i>schistosoma mansoni</i> miracidiaand on their physiological parameters

Abstract

Profenophos is an organophosphorus pesticide which are used effectively against cotton insects and mites.The present work was carried out to evaluate the molluscicidal activity of pesticides (Profenophos) against Biomphalaria alexandrina snails. Also, the effect of sublethal concentrations of pesticide on the infection of B. alexandrina with Schistosoma mansoni and some enzymes of energy metabolism were studied. The results showed that the infection of B. alexandrina with schistosoma mansoni was greatly reduced after exposure to LC 0 , LC 10 , LC 25 of pesticide and also, reduction in number of cercariae per snail during the patent period and in the period of cercarial shedding. The present study indicated that the increase in levels of aminotransaminases, acid phosphate-se and alkaline phosphatases enzymes in haemolymph and soft tissue of snails and the activity level of lactate dehydrogenase, hexoki-inase and pyruvatekinase was also significantly reduced in response to treatment.

Assessment of Bacillus aerius and Bacillus toyonensis extracts as biocontrol agents against Biomphalaria alexandrina snails

“…According to Tunholi et al (2011), the elevation of AST, ALT and ALP activities correlated with alteration in phospholipid metabolism and the high energy demand of the snail. Also, Mohamed (2011) explained the elevation of ALP level in the haemolymph of B. alexandrina snails due to the destruction of internal snail cells.…”

Biochemical and histological assessment of some heavy metals on Biomphalaria alexandrina snails and Oreochromis niloticus fish in Lake Burullus, Egypt.

“…Bislimi et al (2013) recorded a significant increase of transaminases activity and catalase in the garden snail specimens (Helix pomatia L) which were collected from polluted area compared to control. Mohamed (2011) indicated that there are significant elevations in the level of ALP, after using of pesticides (Profenophos) against B. alexandrina, which can be explained by the destruction of internal snail cells. Meanwhile, in fish, these results agree with Zaghloul et al (2008), Tayel et al (2014), El-Khayat et al (2016) and Ismail et al (2017) who reported highly significant increase in the activities of AST, ALT and ALP in serum of O. niloticus in fish collected from lakes El-Burullus, Manzala and from highly polluted unlined sites at Giza and El-Beharia canals.…”

Effects of Endosulfan on Predator–Prey Interactions Between Catfish and Schistosoma Host Snails

“…To date, despite the fact that many studies having documented the effects of pesticides on aquatic invertebrate and vertebrate fauna, none of these studies have assessed the effect of pesticides on the predator–prey interaction of Schistosoma host snails and their fish predators. However, studies specifically looking at the effects of pesticides on host snails have mainly focused on organophosphate pesticides, including the insecticides profenophos and chlorpyrifos, as studied by Hasheesh and Mohamed ( 2011 ) and Mohamed ( 2011 ), and these were found to have molluscicidal effects. Ibrahim et al ( 1992 ) observed decreased egg production and egg hatchability at sublethal concentrations and mortality at greater concentrations of chlorpyrifos by Biomphalaria alexandrina .…”